Use the best steel and the most secure locking mechanisms Durable protective PVC coating to prevent surface scratching, rusting and corrosion. Push Dust cover protects keyway rusting and corrosion provided with two high security key, key rings and easy to grip. Various kinds of fashion designs/color can be ed; also customer's design and logos are welcome Goods have been obtained national patent and approved by GS/TUV, CELAB, ISO 9001, also have passed the test of PAHS in Europe